Google has pushed out an update to Glass, its upcoming futuristic, computerized eyeglasses.

A few thousand developers are working with an early version of Glass. When the glasses are fire up today, they'll find about a dozen tweaks and changes.

A Google spokesman confirmed the software update, adding that more information about the changes should be coming soon.

The update was pushed out Tuesday night and includes Google+ integration and Google+ Hangout notifications.

The update comes a week before Google's annual developers conference, Google I/O, opens in San Francisco. Much of the focus of the conference is expected to be on Glass, along with the Android platform.

Developers, after shelling out $1,500, have been working with Glass for several weeks. A few early adopters also are using them, while about 8,000 early testers, dubbed Explorers, are expected to get their early editions in the next month or so.

All of this ado is coming about a year before Glass is ready to ship. Late last month, Eric Schmidt, Google's executive chairman, said Glass' general availability is still a "year-ish" away.

A year before its release, Glass is causing quite a ruckus.

Las Vegas casino Caesars Palace confirmed to Computerworld Tuesday that anyone wearing Glass will not be allowed inside the casino. Those who break the rule, could face arrest.

That statement came a few months after a Seattle caf said that anyone wearing Glass would not be welcome in the restaurant.